<template>
  <div>
    <!-- 面包屑导航 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>数据统计</el-breadcrumb-item>
  <el-breadcrumb-item>数据报表</el-breadcrumb-item>
  </el-breadcrumb>
  <!-- 背景卡片 -->
  <el-card class="box-card">
    <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
    <div id="main" style="width: 800px;height:400px;"></div>
  </el-card>
  </div>
</template>

<script>
  // 导入echarts
  import echarts from 'echarts'

  import _ from 'lodash'
export default {
  async mounted() {
       // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'))
        const { data: res } = await this.$http.get(`reports/type/1`)
        console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error('获取统计数据失败！')
        }

        // 指定图表的配置项和数据
       const result = _.merge(res.data, this.options)
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result)
  },
  data() {
    return {
    options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  }
}
</script>

<style lang="less" scoped>

</style>
